Sandy Bridge Memory Scaling: Choosing the Best DDR3by Jared Bell on July 25, 2011 1:55 AM EST
Test Configuration and Settings
For our testing, we used the following system.
|Memory Benchmarking System Configuration|
|CPU||Intel Core i7-2600K (Stock with Turbo Boost enabled: 3.5GHz - 3.8GHz)|
|Motherboard||ASUS P8P67 Pro - BIOS version 1502|
|Memory||Patriot Viper Extreme Division 2 4GB (2x2GB) DDR3-2133 Kit|
|Graphics||MSI GTX 580 Lightning - Stock clocks (832MHz/1050MHz)|
|SSD||OCZ Agility 2 120GB|
|PSU||Corsair HX850 Power Supply|
|OS||Microsoft Windows 7 Professional 64-bit|
You’ll notice that we list only one specific set of memory; I don't have specifically rated modules for each of the memory speeds tested. Instead, I used a pair of DDR3-2133 modules that worked flawlessly at all of the lower speeds. Thanks to Patriot for supplying the DDR3-2133 4GB kit used for today's testing. To ensure my results weren't skewed, I tested a pair of DDR3-1600 CL9 modules against the DDR3-2133 CL9 modules running at the lower DDR3-1600 CL9 speed. The results of this test were identical. There may be minor variations between memory brands, but as a baseline measurement of what to expect our testing will be sufficient. We then used the following clock speeds and timings:
|Tested Memory Speeds|
Each of the tests were performed three times with the average of those three runs used for the final results. However, there were a few exceptions to this. First, PCMark 7 was only ran once because it loops three times before providing its score. Second, the x264 HD Benchmark was only ran once because it looped four times in a single run. Third and finally, the LINPACK Benchmark was looped twenty-five times because it was also used to test for stability. And with that out of the way, let’s get to the test results.